body{
	background: lightblue;
}

#contenedor{
	height: 800px;
	width: 900px;
	border: black solid 1px;
	margin: 0 auto;
	background: white;
}

header{
	width: 900px;
	height: 150px;
	border: green solid 1px;
	float: left;
}

#logo{
	width: 296px; /*sin bordes es 300*/
	height: 150px;
	border: blue solid 1px;
	float: left;
}

nav{
	width: 600px;
	height: 150px;
	border: blue solid 1px;
	float: left;
}

#principal{
	width: 900px;
	height: 500px;
	float:left;
	border: green solid 1px;
}

aside#uno{
	width: 200px;
	height: 500px;
	float:left;
	border: blue solid 1px;
}

section{
	width: 696px; /*sin bordes es 700*/
	height: 500px;
	float:left;
	border: blue solid 1px;
}

footer{
	width: 900px;
	height: 145px; /*sin bordes 150*/
	float:left;
	border: green solid 1px;
}

#pieL{
	width: 428px;
	height: 125px; /*sin bordes 150*/
	float:left;
	border: blue solid 1px;
	text-align: left;
	padding: 10px;
}

#pieR{
	width: 428px; /*sin padding es 450*/
	height: 125px; /*sin bordes 150*/
	float:left;
	border: blue solid 1px;
	text-align: right;
	padding: 10px;
}